/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.zookeeper.server.persistence;
import org.apache.jute.Record;
import org.apache.zookeeper.ZooDefs;
import org.apache.zookeeper.server.DataTree;
import org.apache.zookeeper.server.Request;
import org.apache.zookeeper.test.ClientBase;
import org.apache.zookeeper.txn.SetDataTxn;
import org.apache.zookeeper.txn.TxnHeader;
import org.junit.Assert;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public class FileTxnSnapLogTest {
/**
* Test verifies the auto creation of data dir and data log dir.
* Sets "zookeeper.datadir.autocreate" to true.
*/
@Test
public void testWithAutoCreateDataLogDir() throws IOException {
File tmpDir = ClientBase.createEmptyTestDir();
File dataDir = new File(tmpDir, "data");
File snapDir = new File(tmpDir, "data_txnlog");
Assert.assertFalse("data directory already exists", dataDir.exists());
Assert.assertFalse("snapshot directory already exists", snapDir.exists());
String priorAutocreateDirValue = System.getProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE);
System.setProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE, "true");
FileTxnSnapLog fileTxnSnapLog;
try {
fileTxnSnapLog = new FileTxnSnapLog(dataDir, snapDir);
} finally {
if (priorAutocreateDirValue == null) {
System.clearProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE);
} else {
System.setProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE, priorAutocreateDirValue);
}
}
Assert.assertTrue(dataDir.exists());
Assert.assertTrue(snapDir.exists());
Assert.assertTrue(fileTxnSnapLog.getDataDir().exists());
Assert.assertTrue(fileTxnSnapLog.getSnapDir().exists());
}
/**
* Test verifies server should fail when data dir or data log dir doesn't
* exists. Sets "zookeeper.datadir.autocreate" to false.
*/
@Test
public void testWithoutAutoCreateDataLogDir() throws Exception {
File tmpDir = ClientBase.createEmptyTestDir();
File dataDir = new File(tmpDir, "data");
File snapDir = new File(tmpDir, "data_txnlog");
Assert.assertFalse("data directory already exists", dataDir.exists());
Assert.assertFalse("snapshot directory already exists", snapDir.exists());
String priorAutocreateDirValue = System.getProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE);
System.setProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE, "false");
try {
FileTxnSnapLog fileTxnSnapLog = new FileTxnSnapLog(dataDir, snapDir);
} catch (FileTxnSnapLog.DatadirException e) {
Assert.assertFalse(dataDir.exists());
Assert.assertFalse(snapDir.exists());
return;
} finally {
if (priorAutocreateDirValue == null) {
System.clearProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE);
} else {
System.setProperty(FileTxnSnapLog.ZOOKEEPER_DATADIR_AUTOCREATE, priorAutocreateDirValue);
}
}
Assert.fail("Expected exception from FileTxnSnapLog");
}
@Test
public void testAutoCreateDb() throws IOException {
File tmpDir = ClientBase.createEmptyTestDir();
File dataDir = new File(tmpDir, "data");
File snapDir = new File(tmpDir, "data_txnlog");
Assert.assertTrue("cannot create data directory", dataDir.mkdir());
Assert.assertTrue("cannot create snapshot directory", snapDir.mkdir());
File initFile = new File(dataDir, "initialize");
Assert.assertFalse("initialize file already exists", initFile.exists());
String priorAutocreateDbValue = System.getProperty(FileTxnSnapLog.ZOOKEEPER_DB_AUTOCREATE);
Map<Long, Integer> sessions = new ConcurrentHashMap<>();
attemptAutoCreateDb(dataDir, snapDir, sessions, priorAutocreateDbValue, "false", -1L);
attemptAutoCreateDb(dataDir, snapDir, sessions, priorAutocreateDbValue, "true", 0L);
Assert.assertTrue("cannot create initialize file", initFile.createNewFile());
attemptAutoCreateDb(dataDir, snapDir, sessions, priorAutocreateDbValue, "false", 0L);
}
@Test
public void testGetTxnLogSyncElapsedTime() throws IOException {
File tmpDir = ClientBase.createEmptyTestDir();
FileTxnSnapLog fileTxnSnapLog = new FileTxnSnapLog(new File(tmpDir, "data"),
new File(tmpDir, "data_txnlog"));
TxnHeader hdr = new TxnHeader(1, 1, 1, 1, ZooDefs.OpCode.setData);
Record txn = new SetDataTxn("/foo", new byte[0], 1);
Request req = new Request(0, 0, 0, hdr, txn, 0);
try {
fileTxnSnapLog.append(req);
fileTxnSnapLog.commit();
long syncElapsedTime = fileTxnSnapLog.getTxnLogElapsedSyncTime();
Assert.assertNotEquals("Did not update syncElapsedTime!", -1L, syncElapsedTime);
} finally {
fileTxnSnapLog.close();
}
}
private void attemptAutoCreateDb(File dataDir, File snapDir, Map<Long, Integer> sessions,
String priorAutocreateDbValue, String autoCreateValue,
long expectedValue) throws IOException {
sessions.clear();
System.setProperty(FileTxnSnapLog.ZOOKEEPER_DB_AUTOCREATE, autoCreateValue);
FileTxnSnapLog fileTxnSnapLog = new FileTxnSnapLog(dataDir, snapDir);
try {
long zxid = fileTxnSnapLog.restore(new DataTree(), sessions, new FileTxnSnapLog.PlayBackListener() {
@Override
public void onTxnLoaded(TxnHeader hdr, Record rec) {
// empty by default
}
});
Assert.assertEquals("unexpected zxid", expectedValue, zxid);
} finally {
if (priorAutocreateDbValue == null) {
System.clearProperty(FileTxnSnapLog.ZOOKEEPER_DB_AUTOCREATE);
} else {
System.setProperty(FileTxnSnapLog.ZOOKEEPER_DB_AUTOCREATE, priorAutocreateDbValue);
}
}
}
}